;# checks the 8 bit ranges ;# all negative values should contain a Prefix for MAXQ20 ;# immediate values with one operand for MAXQ10 skips PFX .text move A[0], #-1 move Ap, #-1 move a[0], #1 move AP, #-125 ; AP is an 8 bit register move AP, #-126 move AP, #-127 move A[0], #125 ; A[0] is an 16 bit register - no pfx req. here move A[0], #126 move A[0], #128 move A[0], #254 ; --------------- move @++SP, #-1 ; check PFX generation for mem operands move @++sp, #-126 ; - move @++sp, #254 ; - no pFX here move @++sp, #-127 ; - move @++sp, #-128 ;-------------------------- Add #-1 ;Check PFX gen. for single operand instructions Add #-127 Add #-129 Add #127 Add #128 add #129 add #254 add #ffh add #-254 add #-127 add #-129 ; --------------------